- Universal programmable thermostat
- Provides electronic control of 24 Vac heating and cooling systems
- Also offers humidification, dehumidification and ventilation control
- Requires just three wires to the thermostat
Buy online Honeywell TH9421C1004 Vision Pro IAQ Thermostat
Honeywell TH9421C1004 Vision Pro IAQ Thermostat
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